Big Lake is a lake in Oneida County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.

How deep is Big Lake?

Big Lake has a maximum depth of 27 feet. The lake covers 845 acres.

Are there boat ramps on Big Lake?

Big Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include East Big Lake Loop, Big Lake - Schultz, Big Lake. Public access is listed as yes.

Can I fish at Big Lake?

Big Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.

Big Lake

Oneida County, Wisconsin845 acresView map Directions

No nutrient or algae sampling on record from Wisconsin DNR for this lake.

Max depth

27 ft

Bathymetric survey

Area

845 acres

Surface area

Impaired · Mercury
27 ft max depth
Public access

See the measurements Directions Where to stay

Big Lake in Oneida County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 27 ft. Surface area: 845 acres.

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Big Lake is a 845-acre lake in Oneida County, Wisconsin with a maximum depth of 27 feet. Limited fish-species data available. Public access is available with 3 public boat landings.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water. Methodology: how these readings are compared.

What Big Lake is good for

From access and monitoring records, not editorial picks.

Boat launch3 documented ramps

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Big Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.

Whether Big Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Big Lake

These are the measurements Wisconsin DNR publishes for Big Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data. TSI undefined.

Ask about Big Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Max depth

27 ft

Surface area

845 acres

Public access

Yes

Listed by Wisconsin DNR

Recreation & Access

Boat Landings

Yes

Public Access

East Big Lake LoopPublic
Big Lake - SchultzPublic
Big LakePublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Big Lake

Compare lakeside cabins, hotels, and vacation rentals near Big Lake in Oneida County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Big Lake

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Fishing Big Lake

→ Big Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Big Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

Source: EPA ATTAINS assessment unit WI10008469 · Official waterbody report

Nearby Lakes in Oneida County

Crystal Lake2.5 ft clear · Eutrophic1.1 miView →Dog Lake3.9 ft clear · Eutrophic1.5 miView →Little Moccasin Lake2 miView →Moccasin Lake6.4 ft clear · Mesotrophic2.1 miView →Crooked Lake1.9 miView →Deer Lake4 ft clear · Eutrophic2.3 miView →

Frequently asked questions about Big Lake

Where is Big Lake?: Big Lake is a lake in Oneida County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Big Lake?: Big Lake in Oneida County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 27 ft. Surface area: 845 acres.
Is Big Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Big Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Big Lake?: Big Lake has a maximum depth of 27 feet. The lake covers 845 acres.
Are there boat ramps on Big Lake?: Big Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include East Big Lake Loop, Big Lake - Schultz, Big Lake. Public access is listed as yes.
Can I fish at Big Lake?: Big Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.